The Coleman Audio is a Four Input Switcher with Monitor Controller
The PS1A provides switching and monitoring control for up to four stereo devices. Easy comparison of input and output of any recording medium. This unit provides a variable level monitor output and two additional fixed outputs for metering, cue feed or master record path (ie; DAT, CD-R, or even linear magnetic media, aka... tape!). The mono switch allows you to check phase compatibility of a stereo source and only feeds the monitor ouput. All connections are via XLR.